Essay
The "normal" mass of the Milky Way (stars and interstellar medium together) is estimated at 100 billion-200 billion solar masses.The total mass of the galaxy measured by its rotation curve, however, is estimated in the interval of 1 trillion-1.5 trillion solar masses.How do we explain this discrepancy? What fraction of the Milky Way's mass is "normal"?
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The difference between the total and the...View Answer
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